Paleobiology (West Texas, USA), biostratigraphy and paleogeography (Vancouver Island, Canada) of late Paleozoic conodonts
Bibliographic record
Abstract
Three conodont-related studies utilize techniques that highlight the diverse applicability and elucidate more about the nature of these ancient microfossils. These studies impact and utilize paleontology, geochemistry, biostratigraphy, stratigraphy, sedimentology, paleoecology, and the paleogeography of tectono-stratigraphic terranes. Electron microprobe analyses of conodont elements reveal internal chemical distributions which support the theory that conodont elements functioned as exposed teeth within the conodont animal’s oral cavity. The mineralized crown of the conodont element was partially embedded within soft tissue like other vertebrate teeth. To prevent unwanted sampling of diagenetic alteration, distributions of geochemically important chemical elements warrant consideration in geochemical studies investigating or utilizing conodonts. Paleozoic conodonts from Vancouver Island are described and figured in the most thorough compilation from the region. A wide variety of genera spanning the Mississippian through Early Permian represent a significant biostratigraphic and taxonomic contribution. Conodont Color Alteration Index values provide insight into the highly variable thermal history of the region. Interpretations of the upper Paleozoic units of Vancouver Island are improved by new biostratigraphic and paleoecologic data from conodonts. In conjunction with new stratigraphic and sedimentologic data, stratigraphic correlations and interpretations of depositional environment reveal a topographically variable basin with shallower water carbonates grading downslope into carbonate, mudstone, and chert. A combination of new and previously published fossil data, including conodonts, strongly indicate that, in the late Paleozoic, Vancouver Island was close to northwestern Pangaea and at latitudes comparable to southeastern British Columbia. Fossil and paleomagnetic data from the Mesozoic are congruent with this interpretation. Based on stratigraphic and paleogeographic differences, the Paleozoic of Vancouver Island is assigned to the Vancouver terrane separate from the Alaskan Wrangell terrane.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".